Description of the male of Misetus strumiai Di Giovanni, Scaramozzino & Diller, 2018 (Hymenoptera, Ichneumonidae, Ichneumoninae, Phaeogenini) from Italy

New Gnamptodontinae (Hymenoptera: Braconidae) from China and Vietnam, with two genera new for China and seven new species

The type specimens of bees (Hymenoptera, Apoidea) deposited in the Zoological Institute of the Russian Academy of Sciences, St. Petersburg. Contribution III. Family Halictidae, genera Halictus Latreille, 1804, and Sphecodes Latreille, 1804

A Taxonomic Revision of Nearctic Conostigmus (Hymenoptera: Ceraphronoidea: Megaspilidae)

Caliroa slug sawflies of Japan (Hymenoptera, Tenthredinidae)

Synopsis of the carpenter bee subgenus Xylocopa (Schonnherria) Lepeletier, 1841 (Hymenoptera: Apidae) in Colombia, with designation of lectotypes and the description of two new species

Review of Calomutilla Mickel, 1952, a new species, and comparison with Pertyella Mickel, 1952 (Hymenoptera: Mutillidae)

A review of South Korean Alloplasta Förster (Hymenoptera: Ichneumonidae: Banchinae) with description of a new species

Review of the Camponotus samius complex (Hymenoptera: Formicidae) in the Turano-Balkan region, with the description of a new species from Iran

Discovery of the genus Kudakrumia Krombein, 1979 (Hymenoptera: Mutillidae) in India and description of a new species

Review of the world Monoctonina Mackauer 1961 (Hymenoptera, Braconidae, Aphidiinae): key for their identification and descriptions of five new species

Taxonomic revision of the Protopolybia picteti-emortualis species-group (Richards, 1978), with descriptions of two new species (Hymenoptera: Vespidae, Polistinae)

Biodiversity of the aculeate wasps (Hymenoptera: Aculeata) of the Arabian Peninsula (Cover)

A review of Deuterixys Mason from China, with description of three new species (Hymenoptera, Braconidae, Microgastrinae)

Discovery of the transantarctic distribution of the genus Metanteon Olmi (Hymenoptera: Dryinidae), with description of a new species from New Caledonia

Discovery of a new species of Gonatopus (Hymenoptera: Dryinidae) from Colombia

First record of Hormiini Förster, 1863, and Macrocentrinae Förster, 1863 (Hymenoptera: Braconidae) for the fauna of Egypt, with the description of a new species

Velvet ants of the tribe Smicromyrmini Bischoff (Hymenoptera: Mutillidae)
of Japan

A new species of Wesmaelia Foerster (Hymenoptera: Braconidae:Euphorinae) from China

New species of Grotea Cresson (Hymenoptera: Ichneumonidae: Labeninae) from Brazil and Suriname

Taxonomic revision of the aequata-group of the subgenus Eucera s. str (Hymenoptera, Apidae, Eucerini)

The Neotropical species of Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae). Part V: the C. diazi species group, with the description of three new species

Revision of Taiwanese and Ryukyuan species of Propristocera (Hymenoptera: Bethylidae), with description of a new species

On the origin of Anagyrus callidus (Hymenoptera: Encyrtidae), a parasitoid of pink hibiscus mealybug Maconellicoccus hirsutus (Hemiptera: Pseudococcidae)

First record of Undabracon Quicke, 1986 (Hymenoptera: Braconidae, Braconinae) from the Indian subcontinent with the description of a new species

Overview of the bee genus Trachusa Panzer, 1804 (Hymenoptera: Apoidea: Megachilidae: Anthidiini) from China with description of three new species

New species of Myrmosinae (Hymenoptera: Mutillidae) from Southeastern Asia

Tersilochinae (Hymenoptera: Ichneumonidae) from New Zealand. Part 2. Review of genera Kiwi gen. nov. and Zealochus Khalaim

A new species of Stenodynerus de Saussure, 1863 (Hymenoptera: Vespidae: Eumeninae) from Lombok, with a key to the species from the Malay Archipelago

Dryinidae of the Afrotropical region (Hymenoptera, Chrysidoidea)

Description of Eniacomorpha hermetiae Delvare sp. n. (Hymenoptera, Chalcidoidea, Chalcididae) a pupal parasitoid of Hermetia illucens (L.) (Diptera, Stratiomyidae), and a potential threat to mass production of the fly as a feed supplement for domestic animals

The arctic and alpine bumblebees of the subgenus Alpinobombus revised from integrative assessment of species’ gene coalescents and morphology (Hymenoptera, Apidae, Bombus)